sysdeps/unix/sysv/linux/updwtmp.c

   1 /* Copyright (C) 1998-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <string.h>
  20 #include <unistd.h>
  21
  22 #define TRANSFORM_UTMP_FILE_NAME(file_name) \
  23     ((strcmp (file_name, _PATH_UTMP) == 0 \
  24       && __access (_PATH_UTMP "x", F_OK) == 0) ? (_PATH_UTMP "x") : \
  25      ((strcmp (file_name, _PATH_WTMP) == 0 \
  26        && __access ( _PATH_WTMP "x", F_OK) == 0) ? (_PATH_WTMP "x") : \
  27       ((strcmp (file_name, _PATH_UTMP "x") == 0 \
  28         && __access (_PATH_UTMP "x", F_OK) != 0) ? _PATH_UTMP : \
  29        ((strcmp (file_name, _PATH_WTMP "x") == 0 \
  30          && __access (_PATH_WTMP "x", F_OK) != 0) ? _PATH_WTMP : \
  31         file_name))))
  32
  33 #include <login/updwtmp.c>